Synthaholic's Electronic Music Site
Page maintained by Scott R. Gravenhorst.

OTA Tutorial by Eugene M. Zumchak

See also: Harris Semi's datasheet and App Note #AN6668
"Applications of the CA3080 and CA3080A high-performance Operational Transconductance Amplifiers"

Parts Substitution Information
LFSR Feedback Taps to 168 bits
My Stuff:
A 32 bit LFSR Pseudo Random Noise Generator
Voltage Controlled State Variable Filter with Nonlinear Feedback
A 4069 based Triangle LFO
A CMOS Sawtooth to Triangle Converter
An experimental CMOS VCF (Sallen-Key) UNTESTED
Semi CMOS Triangle VCO
How to get sawtooth from a 4046 VCO